code.py

import numpy as np
xl=[]
yl=[]
xx=None#having the numbers as a string will help us have the whole input in one line
yy=None
xx=input('enter x values ')#having the numbers as a string
yy=input("enter y values ")
xl=xx.split()#splitting the string so i can turn them into integers 
yl=yy.split()
x=np.array(xl)
y=np.array(yl)
x = x.astype(np.float)
y = y.astype(np.float)
n=len(y) 
xy=np.multiply(x,y)
x2=np.multiply(x,x)
sx=sum(x)
sy=sum(y) 
sxy=xy.sum()
sx2=x2.sum() 
coffmatrix=np.array([[n,sx],[sx,sx2]])
freematrix=np.array([[sy],[sxy]])
coffmatrixinv= np.linalg.inv(coffmatrix)
a_b=np.dot(coffmatrixinv,freematrix)
print("best fit is :","y =",a_b[0],'+',a_b[1],'* x')